JPH0928140A - Liquid-agrochemical injection apparatus - Google Patents
Liquid-agrochemical injection apparatusInfo
- Publication number
- JPH0928140A JPH0928140A JP18560995A JP18560995A JPH0928140A JP H0928140 A JPH0928140 A JP H0928140A JP 18560995 A JP18560995 A JP 18560995A JP 18560995 A JP18560995 A JP 18560995A JP H0928140 A JPH0928140 A JP H0928140A
- Authority
- JP
- Japan
- Prior art keywords
- chemical liquid
- cleaning
- valve
- flow rate
- supply line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Fertilizing (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、自動潅水システム
等に使用される薬液混入装置に係り、さらに詳しくは薬
液供給ラインに設けられた流量計やストレーナ等の洗浄
必要箇所を自動洗浄する機能を備えた薬液混入装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chemical mixing device used in an automatic irrigation system or the like, and more particularly to a function of automatically cleaning a cleaning-required portion such as a flow meter or a strainer provided in a chemical supply line. The present invention relates to a chemical liquid mixing device provided.
【0002】[0002]
【従来の技術】洗浄必要箇所を洗浄する機能を備えた従
来の薬液混入装置では、洗浄必要箇所の下流側に設けら
れた洗浄水供給流路と洗浄必要箇所の上流側に設けられ
た洗浄水排出流路に各々手動弁が設けられており、洗浄
必要時には、作業者が該両手動弁を開け、洗浄水を洗浄
水供給流路から洗浄必要箇所へ圧送させ洗浄水排出流路
から排出させて、洗浄必要箇所の洗浄が行われていた。2. Description of the Related Art In a conventional chemical liquid mixing device having a function of cleaning a cleaning-required portion, a cleaning-water supply channel provided on the downstream side of the cleaning-required portion and a cleaning water provided on the upstream side of the cleaning-required portion. Manual valves are provided in the discharge channels, and when cleaning is required, the operator opens both manual valves to force the cleaning water to be pumped from the cleaning water supply channel to the cleaning required location and discharged from the cleaning water discharge channel. Therefore, the parts that need to be cleaned were being cleaned.
【0003】[0003]
【発明が解決しようとする課題】上記従来の薬液混入装
置では、薬液の混入作業は自動で行うことはできるが、
薬液供給終了後、次回の薬液混入作業がスムーズに始動
できるように洗浄必要箇所の残存薬液を洗い流してクリ
ーンな状態にするためには洗浄水を洗浄必要箇所に流す
必要があり、その際は洗浄水供給流路と洗浄水排出流路
に設けられた両手動弁を作業者が開けなくてはならなか
った。In the above-mentioned conventional chemical liquid mixing apparatus, the chemical liquid mixing work can be automatically performed.
After the supply of the chemical liquid, it is necessary to flush the cleaning water to the required cleaning area to wash away the residual chemical liquid in the cleaning required area so that the next chemical mixing operation can be started smoothly and to make it a clean state. The operator had to open both manual valves provided in the water supply passage and the wash water discharge passage.
【0004】また、流量計に異物が噛み込んだりストレ
ーナにごみ等がたまったこと等が原因で薬液供給ライン
に異常が発生した際も同様であった。特に薬液混入装置
の設置場所が離れている場合は前記手動弁を開けるため
に該設置場所まで足を運ばなくてはならなかった。The same was true when an abnormality occurred in the chemical liquid supply line due to foreign matter being caught in the flowmeter or dust on the strainer. In particular, when the chemical liquid mixing device was installed at a remote place, it was necessary to go to the installation place to open the manual valve.
【0005】さらに、薬液混入装置が自動制御であるた
めに設置現場へ行く頻度が少なくなり、薬液供給ライン
の異常発生を早めに確認できない場合もあり、その結
果、正確な薬液混入作業が行えないまま運転することに
より混入比率の精度が低下したり、無理な運転を続ける
ことにより薬液供給ラインの流量計やポンプ等に負担が
かかり、それ等の故障や破損が発生するという問題があ
った。Further, since the chemical liquid mixing device is automatically controlled, the frequency of going to the installation site is reduced, and it may not be possible to confirm the occurrence of an abnormality in the chemical liquid supply line early. As a result, the accurate chemical liquid mixing work cannot be performed. There is a problem that the accuracy of the mixing ratio is lowered by operating as it is, and a burden is placed on the flowmeter, pump, etc. of the chemical liquid supply line by continuing unreasonable operation, resulting in failure or damage thereof.
【0006】本発明は、以上のような従来技術の問題点
に鑑みなされたもので、薬液の比率混入ばかりでなく薬
液供給ラインの洗浄必要箇所の洗浄も自動で行うことが
できるようにした薬液混入装置を提供することを目的と
する。The present invention has been made in view of the problems of the prior art as described above, and not only the ratio of the chemical liquid is mixed, but also the chemical liquid supply line can be automatically cleaned at a required cleaning portion. It is intended to provide a mixing device.
【0007】[0007]
【課題を解決するための手段】上記目的を達成する自動
洗浄機能を備えた薬液混入装置における第一発明の構成
は、主管に主管流量計と該主管に薬液を混入する薬液供
給ラインを接続し、該薬液供給ラインに薬液流量計と流
量調節弁を設置すると共に、前記主管の流量と薬液供給
ラインの流量との比率を制御装置に入力する設定器を設
け、薬液供給ラインの流量を該制御装置にて所定比率の
流量になるように自動的に前記流量調節弁を調整する薬
液混入装置において、薬液供給ラインの洗浄必要箇所の
下流側には主管の適宜箇所と接続される洗浄水用自動弁
を有する分岐流路が設けられ、また該洗浄必要箇所の上
流側には排出流路を有する三方切換弁が設けられ、且つ
該洗浄水用自動弁および三方切換弁も前記制御装置によ
り制御されることを特徴とする。According to a first aspect of the present invention in a chemical liquid mixing apparatus having an automatic cleaning function for achieving the above object, a main pipe flow meter is connected to the main pipe and a chemical liquid supply line for mixing the chemical liquid is connected to the main pipe. , A chemical flow meter and a flow control valve are installed in the chemical supply line, and a setting device for inputting a ratio of the flow rate of the main pipe to the flow rate of the chemical supply line to a control device is provided to control the flow rate of the chemical supply line. In the chemical solution mixing device that automatically adjusts the flow rate control valve so that the flow rate of the device is a predetermined ratio, the automatic cleaning water is connected to the appropriate part of the main pipe on the downstream side of the chemical solution supply line where cleaning is required. A branch flow passage having a valve is provided, and a three-way switching valve having a discharge flow passage is provided on the upstream side of the cleaning required portion, and the automatic wash water valve and the three-way switching valve are also controlled by the control device. To do And it features.
【0008】また第二発明の構成は、主管に主管流量計
と該主管に薬液を混入する薬液供給ラインを接続し、該
薬液供給ラインに薬液流量計と流量調節弁を設置すると
共に、前記主管の流量と薬液供給ラインの流量との比率
を制御装置に入力する設定器を設け、薬液供給ラインの
流量を該制御装置にて所定比率の流量になるように自動
的に前記流量調節弁を調整する薬液混入装置において、
薬液供給ラインの洗浄必要箇所の下流側には主管の適宜
箇所と接続される洗浄水用自動弁を有する分岐流路が設
けられ、また該洗浄必要箇所の上流側には排出流路を有
する分岐点が設けられ、該分岐点の上流側流路と排出流
路には薬液用自動弁と排水用自動弁とがそれぞれ設けら
れ、且つ該洗浄用自動弁、薬液用自動弁及び排水用自動
弁も前記制御装置により制御されることを特徴とする。According to the structure of the second invention, a main pipe flow meter and a chemical liquid supply line for mixing a chemical liquid are connected to the main pipe, a chemical liquid flow meter and a flow control valve are installed in the chemical liquid supply line, and the main pipe is provided. A setting device for inputting the ratio of the flow rate of the chemical solution to the flow rate of the chemical liquid supply line to the control device is provided, and the flow rate control valve is automatically adjusted by the control device so that the flow rate of the chemical liquid supply line becomes a predetermined ratio In the chemical solution mixing device,
A branch passage having an automatic valve for washing water, which is connected to an appropriate portion of the main pipe, is provided on the downstream side of the cleaning required portion of the chemical liquid supply line, and a branch having a discharge passage is provided on the upstream side of the cleaning required portion. Points are provided, and an automatic valve for chemical liquid and an automatic valve for drainage are respectively provided in the upstream side flow path and the discharge flow path of the branch point, and the automatic cleaning valve, the automatic chemical solution valve and the automatic drainage valve are provided. Is also controlled by the control device.
【0009】上記した排出流路は、主管の薬液供給ライ
ンが接続されている点より下流側に接続してもよいし、
洗浄水の水源まで配管してもよい。The above-mentioned discharge passage may be connected downstream from the point where the chemical liquid supply line of the main pipe is connected,
You may pipe to the water source of wash water.
【0010】本発明によれば、薬液供給終了後やタイマ
ーにて設定された時間等のあらかじめ制御装置のプログ
ラムに記憶されている洗浄開始時になると、制御装置は
洗浄必要箇所の下流側に設けられた分岐流路の洗浄水用
自動弁を開き、上流側に設けられた三方切換弁の流路を
排出流路へと切り換える。主管からの洗浄水は分岐流路
から洗浄必要箇所を通り排出流路から排出される。この
ようにして洗浄必要箇所は洗浄される。According to the present invention, the control device is provided at the downstream side of the cleaning-needed portion at the start of cleaning, which is stored in the program of the control device in advance, such as after the end of the chemical solution supply or the time set by the timer. The automatic valve for washing water in the branch passage is opened, and the passage of the three-way switching valve provided on the upstream side is switched to the discharge passage. The washing water from the main pipe is discharged from the discharge passage through the branch passage, the required washing portion, and the like. In this way, the required cleaning area is cleaned.
【0011】また、洗浄必要箇所の上流側に排出流路を
有する分岐点が設けられ、排出流路と分岐点の上流側流
路とに排水用自動弁と薬液用自動弁とがそれぞれ設けら
れた場合には、洗浄必要時に制御装置は分岐流路と排出
流路の洗浄水用自動弁と排水用自動弁を開け、分岐点の
上流側流路の薬液用自動弁を閉める。このようにして、
前記の場合と同様に洗浄必要箇所が洗浄される。Further, a branch point having a discharge flow path is provided on the upstream side of the cleaning required portion, and a drainage automatic valve and a chemical liquid automatic valve are respectively provided on the discharge flow path and the flow path upstream of the branch point. When the cleaning is required, the control device opens the wash water automatic valve and the drainage automatic valve in the branch flow path and the discharge flow path, and closes the chemical liquid automatic valve in the flow path upstream of the branch point. In this way,
Similar to the above case, the required cleaning area is cleaned.
【0012】[0012]
【発明の実施の形態】以下本発明に係る自動洗浄機能を
備えた薬液混入装置をその実施の形態を示す図面に基づ
いて説明するが、本発明が本実施形態に限定されないこ
とは言うまでもない。BEST MODE FOR CARRYING OUT THE INVENTION A chemical liquid mixing device having an automatic cleaning function according to the present invention will be described below with reference to the drawings showing an embodiment, but it goes without saying that the present invention is not limited to this embodiment.
【0013】図1は、第一発明を自動液肥混入潅水装置
に使用した実例である。図において、1は水源20aか
ら水20を圧送する主管ポンプ2に接続された潅水地ま
で配管されている主管であり、該主管1には主管流量計
3が接続されその下流側の接続点55においては主管1
に液肥10を混入する薬液供給ライン4が接続されてい
る。主管流量計3は制御装置11と接続されており、水
源20aより主管ポンプ2にて圧送される水20の流量
を検出し、その検出信号を制御装置11に送る作用をし
ている。薬液供給ライン4には上流側から薬液タンク1
0a、制御装置11にて流路を切り換えられる三方切換
弁16、ストレーナ9、制御装置11にて駆動される薬
液ポンプ8、薬液供給ライン4の流量を検出し制御装置
11にその検出信号を送る薬液流量計7、制御装置11
からの出力信号を受けて開度調節し薬液供給ライン4の
流量を調節する流量調節弁6、及び逆止弁5が順に接続
されている。本例ではストレーナ9、薬液ポンプ8、薬
液流量計7、流量調節弁6が洗浄必要箇所50に含ま
れ、その上流側に三方切換弁16が前記のごとく設けら
れており、三方切換弁16の残りの口には排出流路15
が設けられている。一方洗浄必要箇所50の下流側には
主管1の主管流量計3の上流側より分岐された分岐流路
13が接続され、分岐流路13には制御装置11にて開
閉される洗浄水用自動弁14が設けられている。12は
液肥10の希釈倍率を制御装置11に入力する設定器で
あり、制御装置11に接続されている。FIG. 1 shows an example in which the first invention is used in an automatic liquid fertilizer-mixed irrigation system. In the figure, reference numeral 1 denotes a main pipe which is piped from a water source 20a to a irrigation site connected to a main pipe pump 2 for pumping water 20, and a main pipe 1 is connected to a main pipe flow meter 3 and a connection point 55 on the downstream side thereof. In the main pipe 1
The chemical liquid supply line 4 for mixing the liquid fertilizer 10 is connected to the. The main pipe flow meter 3 is connected to the control device 11 and detects the flow rate of the water 20 pumped by the main pipe pump 2 from the water source 20a and sends the detection signal to the control device 11. The chemical solution supply line 4 is connected to the chemical solution tank 1 from the upstream side.
0a, the three-way switching valve 16 whose flow path is switched by the control device 11, the strainer 9, the chemical liquid pump 8 driven by the control device 11, the flow rate of the chemical liquid supply line 4, and the detection signal is sent to the control device 11. Chemical flow meter 7, control device 11
A flow rate control valve 6 for controlling the opening of the chemical liquid supply line 4 in response to an output signal from the control valve 6 and a check valve 5 are sequentially connected. In this example, the strainer 9, the chemical liquid pump 8, the chemical liquid flow meter 7, and the flow rate control valve 6 are included in the cleaning required portion 50, and the three-way switching valve 16 is provided on the upstream side thereof as described above. Discharge channel 15 on the remaining mouth
Is provided. On the other hand, a branch flow passage 13 that is branched from the upstream side of the main pipe flow meter 3 of the main pipe 1 is connected to the downstream side of the cleaning required portion 50, and the branch flow passage 13 is automatically opened and closed by the control device 11 for cleaning water. A valve 14 is provided. Reference numeral 12 denotes a setting device for inputting the dilution rate of the liquid fertilizer 10 to the control device 11, which is connected to the control device 11.
【0014】次に、本例の液肥混入の作動について説明
する。水源20aより主管ポンプ2にて圧送される水2
0は、主管1の接続点55で実線矢印で示される液肥1
0が混入されて液肥希釈水30となり、主管1の末端潅
水地に設けられた分岐管17及び開閉弁18を通り潅水
パイプ19から植物21に潅水される。混入される液肥
10は、薬液ポンプ8にて加圧されたものを設定器12
にて設定された希釈倍率になるように、流量調節弁6で
流量調節されている。その際、制御装置11は主管流量
計3の検出流量信号と薬液流量計7の検出流量信号を取
り込み、演算してその実測希釈倍率を求め設定器12よ
り入力された設定希釈倍率と比較して、実測希釈倍率が
設定希釈倍率よりも大きい場合には流量調節弁6に開信
号を送り、小さい場合には流量調節弁6に閉信号を送っ
て設定希釈倍率に近付けていく流量調節を行っている。Next, the operation of mixing liquid fertilizer in this example will be described. Water 2 pumped from the water source 20a by the main pipe pump 2
0 is the liquid fertilizer 1 indicated by the solid arrow at the connection point 55 of the main pipe 1.
0 is mixed to form liquid fertilizer dilution water 30, which is irrigated from the irrigation pipe 19 to the plant 21 through the branch pipe 17 and the opening / closing valve 18 provided at the terminal irrigation area of the main pipe 1. The liquid fertilizer 10 to be mixed is pressurized by the chemical liquid pump 8 and is set by the setting device 12
The flow rate is adjusted by the flow rate adjusting valve 6 so that the dilution ratio is set at. At that time, the control device 11 takes in the detected flow rate signal of the main pipe flow meter 3 and the detected flow rate signal of the chemical liquid flow meter 7, calculates the calculated dilution ratio, and compares it with the set dilution ratio input from the setting device 12. When the actually measured dilution ratio is larger than the set dilution ratio, an open signal is sent to the flow rate control valve 6, and when it is smaller, a close signal is sent to the flow rate control valve 6 to adjust the flow rate to approach the set dilution ratio. There is.
【0015】次に、洗浄の作動について説明する。所定
の液肥混入が終了すると、あらかじめ制御装置11のプ
ログラムに記憶されているとおりに制御装置11は洗浄
信号を出力して、薬液ポンプ8を停止させ主管1への液
肥供給を停止させると共に、分岐流路13に設けられた
洗浄水用自動弁14を開き、洗浄必要箇所50の上流側
流路に設けられた三方切換弁16の流路を排出流路15
側に切り換える。そうすると、主管ポンプ2で加圧され
て主管1を通る水20は点線矢印で示される洗浄水35
となって、分岐流路13及び洗浄水用自動弁14を通り
洗浄必要箇所50を洗浄し三方切換弁16を通って排出
流路15から排出される。制御装置11のプログラムに
記憶されている所定の時間まで上記洗浄が続けられる。Next, the cleaning operation will be described. When the predetermined liquid fertilizer mixing is completed, the control device 11 outputs a washing signal as previously stored in the program of the control device 11, stops the chemical liquid pump 8 to stop the liquid fertilizer supply to the main pipe 1, and branches. The automatic wash water valve 14 provided in the flow path 13 is opened, and the flow path of the three-way switching valve 16 provided in the upstream flow path of the cleaning-needed portion 50 is connected to the discharge flow path 15
Switch to the side. Then, the water 20 pressurized by the main pipe pump 2 and passing through the main pipe 1 becomes the cleaning water 35 indicated by the dotted arrow.
Then, the required cleaning portion 50 is washed through the branch flow passage 13 and the automatic washing water valve 14, and is discharged from the discharge flow passage 15 through the three-way switching valve 16. The cleaning is continued until a predetermined time stored in the program of the controller 11.
【0016】一方異常発生時には、異常検出装置からの
異常検出信号を制御装置11が感知すると、制御装置1
1は洗浄信号を強制的に出力し洗浄を開始させる。洗浄
の作動は上記と同様であるので省略する。異常検出装置
の実例としては、図1に示すごとく薬液供給ライン4の
流量の異常を検出するためにストレーナ9の前後の差圧
を検出する差圧計22を設けるとよい。On the other hand, when an abnormality occurs, when the controller 11 senses an abnormality detection signal from the abnormality detector, the controller 1
1 forcibly outputs a cleaning signal to start cleaning. The cleaning operation is the same as above, and will not be repeated. As an example of the abnormality detecting device, a differential pressure gauge 22 for detecting the differential pressure before and after the strainer 9 may be provided to detect an abnormality in the flow rate of the chemical liquid supply line 4, as shown in FIG.
【0017】また、薬液流量計7から送られる検出流量
信号にて制御装置11は異常発生を感知できる(例えば
液肥供給の作動中であるにもかかわらず、異物が薬液流
量計7に咬み込み液肥10の供給が不可能となり液肥検
出流量がゼロである等)ので、薬液流量計7は異常検出
装置の役割もなす。Further, the control device 11 can detect the occurrence of an abnormality by the detected flow rate signal sent from the chemical liquid flow meter 7 (for example, foreign matter is bitten into the chemical liquid flow meter 7 even though the liquid fertilizer supply is in operation). Since the supply of 10 becomes impossible and the liquid fertilizer detection flow rate is zero), the chemical liquid flow meter 7 also serves as an abnormality detection device.
【0018】図2は第二発明を自動液肥混入潅水装置に
使用した実例である。前記実例との相違点は、洗浄必要
箇所50が薬液流量計7のみであり、その上流側に三方
切換弁16の代わりに排出流路23を有する分岐点77
を設け、さらに排出流路23と分岐点77の上流側流路
に制御装置11の制御下にある排水用自動弁24と、薬
液用自動弁25を設けた点である。FIG. 2 shows an example in which the second invention is used in an automatic liquid fertilizer-mixed irrigation system. The difference from the above-described example is that the cleaning required point 50 is only the chemical liquid flow meter 7 and the branch point 77 having the discharge flow path 23 instead of the three-way switching valve 16 on the upstream side.
In addition, a drainage automatic valve 24 and a chemical liquid automatic valve 25 under the control of the controller 11 are provided in the discharge flow path 23 and the flow path on the upstream side of the branch point 77.
【0019】液肥混入の作動は、第一発明の実例と同様
であるので省略する。以下洗浄の作動について説明す
る。所定の液肥混入が終了すると、あらかじめ制御装置
11のプログラムに記憶されているとおりに制御装置1
1は洗浄信号を出力して、薬液ポンプ8を停止させ主管
1への液肥供給を停止させると共に、分岐流路13に設
けられた洗浄水用自動弁14と排出流路23に設けられ
た排水用自動弁24を開き、分岐点77の上流側流路に
設けられた薬液用自動弁25を閉じる。そうすると、点
線矢印で示される洗浄水35は分岐流路13及び洗浄水
用自動弁14を通って洗浄必要箇所50を洗浄し、分岐
点77及び排水用自動弁24を通って排出流路23から
排出される。このようにして、制御装置11のプログラ
ムに記憶されている所定の時間に達するまで洗浄を行
う。Since the operation of mixing the liquid fertilizer is similar to that of the first embodiment, the description thereof will be omitted. The cleaning operation will be described below. When the prescribed liquid fertilizer mixing is completed, the control device 1 is stored as previously stored in the program of the control device 11.
1 outputs a cleaning signal to stop the chemical liquid pump 8 to stop the supply of liquid fertilizer to the main pipe 1, and at the same time, an automatic valve 14 for cleaning water provided in the branch passage 13 and a drain provided in the discharge passage 23. The automatic valve 24 for chemicals is opened, and the automatic valve 25 for chemicals provided in the upstream flow path of the branch point 77 is closed. Then, the washing water 35 indicated by the dotted arrow passes through the branch passage 13 and the washing water automatic valve 14 to wash the washing required portion 50, passes through the branch point 77 and the drainage automatic valve 24, and is discharged from the discharge passage 23. Is discharged. In this way, cleaning is performed until the predetermined time stored in the program of the control device 11 is reached.
【0020】洗浄の開始は前記のように液肥混入終了後
毎でもよいし、制御装置11のプログラムに洗浄開始時
間として記憶された時間から開始するように制御装置1
1のプログラムを変更してもよい。As described above, the cleaning may be started after the liquid fertilizer is mixed, or the control device 1 may start from the time stored as the cleaning start time in the program of the control device 11.
You may change the program of 1.
【0021】[0021]
【発明の効果】以上のように、本発明は薬液の比率混入
ばかりでなく、残存薬液洗浄や異常発生時の検出及び洗
浄処理等の薬液供給ラインの管理をも自動で行うので、
以下のような効果が得られる。As described above, the present invention not only mixes the ratio of the chemicals, but also automatically manages the chemicals supply line such as residual chemicals cleaning and detection when an abnormality occurs, and cleaning processing.
The following effects can be obtained.
【0022】(1)あらかじめ制御装置のプログラムに
記憶させておけば薬液供給終了毎に自動洗浄できるの
で、薬液供給ラインの流量計やストレーナ等に付着した
残存薬液やごみ等を常に除去でき、異常発生が起こりに
くくなる。 (2)異常発生を常に監視できるようにすると異常時の
検出が早く、また異常検出した後は自動的に洗浄が行わ
れるので薬液供給ラインの流量計やポンプ等に負担をか
けることを防ぐ。その結果、それ等の故障や破損が起こ
りにくくなる。 (3)特に異常発生に対する対処が早いので、希釈倍率
の精度の低下が防止され、安定した運転が継続できる。 (4)従来のように洗浄のためだけに薬液混入装置の設
置現場へ行く必要がなく、作業能率が向上する。(1) If stored in advance in the program of the control device, automatic cleaning can be performed every time the supply of the chemical liquid is completed, so that the residual chemical liquid, dust, etc. adhering to the flowmeter or strainer of the chemical liquid supply line can be always removed, and the abnormality can be detected. It is less likely to occur. (2) If the occurrence of an abnormality can be constantly monitored, detection at the time of abnormality can be detected quickly, and since the cleaning is automatically performed after the abnormality is detected, it is possible to prevent a burden on the flow meter, pump, etc. of the chemical solution supply line. As a result, such failures and damages are less likely to occur. (3) Since the occurrence of an abnormality is dealt with quickly, the accuracy of the dilution ratio is prevented from decreasing, and stable operation can be continued. (4) It is not necessary to go to the installation site of the chemical mixing device just for cleaning as in the conventional case, and the work efficiency is improved.
【図1】図1は本発明の第一発明に係る薬液混入装置を
使用した自動液肥混入潅水装置の構成図である。FIG. 1 is a configuration diagram of an automatic liquid fertilizer-mixing irrigation device using a chemical liquid mixing device according to a first aspect of the present invention.
【図2】図2は本発明の第二発明に係る薬液混入装置を
使用した自動液肥混入潅水装置の構成図である。FIG. 2 is a configuration diagram of an automatic liquid fertilizer-mixing irrigation device using the chemical liquid mixing device according to the second aspect of the present invention.
1…主管 2…主管ポンプ 3…主管流量計 4…薬液供給ライン 5…逆止弁 6…流量調節弁 7…薬液流量計 8…薬液ポンプ 9…ストレーナ 10…液肥 10a…薬液タンク 11…制御装置 12…設定器 13…分岐流路 14…洗浄水用自動弁 15…排出流路 16…三方切換弁 17…分岐管 18…開閉弁 19…潅水パイプ 20…水 20a…水源 21…植物 22…差圧計 23…排出流路 24…排水用自動弁 25…薬液用自動弁 30…液肥希釈水 35…洗浄水 50…洗浄必要箇所 55…接続点 77…分岐点 1 ... Main pipe 2 ... Main pipe pump 3 ... Main pipe flow meter 4 ... Chemical liquid supply line 5 ... Check valve 6 ... Flow control valve 7 ... Chemical liquid flow meter 8 ... Chemical liquid pump 9 ... Strainer 10 ... Liquid fertilizer 10a ... Chemical liquid tank 11 ... Control device 12 ... Setting device 13 ... Branch flow path 14 ... Automatic wash water valve 15 ... Drainage flow path 16 ... Three-way switching valve 17 ... Branch pipe 18 ... Open / close valve 19 ... Watering pipe 20 ... Water 20a ... Water source 21 ... Plant 22 ... Difference Pressure gauge 23 ... Discharge passage 24 ... Automatic drainage valve 25 ... Automatic valve for chemical liquid 30 ... Liquid fertilizer dilution water 35 ... Washing water 50 ... Required washing point 55 ... Connection point 77 ... Branch point
Claims (2)
する薬液供給ラインを接続し、該薬液供給ラインに薬液
流量計と流量調節弁を設置すると共に、前記主管の流量
と薬液供給ラインの流量との比率を制御装置に入力する
設定器を設け、薬液供給ラインの流量を該制御装置にて
所定比率の流量になるように自動的に前記流量調節弁を
調整する薬液混入装置において、 薬液供給ラインの洗浄必要箇所の下流側には前記主管の
適宜箇所と接続される洗浄水用自動弁を有する分岐流路
が設けられ、また該洗浄必要箇所の上流側には排出流路
を有する三方切換弁が設けられ、且つ該洗浄水用自動弁
および三方切換弁も前記制御装置により制御されること
を特徴とする薬液混入装置。1. A main pipe flow meter and a chemical liquid supply line for mixing a chemical liquid are connected to the main pipe, and a chemical liquid flow meter and a flow rate adjusting valve are installed in the chemical liquid supply line, and the flow rate of the main pipe and the chemical liquid supply line. In the chemical liquid mixing device, which is provided with a setting device for inputting a ratio with the flow rate of the control device, and which automatically adjusts the flow rate control valve so that the flow amount of the chemical liquid supply line becomes a flow rate of a predetermined ratio in the control device A branch passage having an automatic valve for washing water, which is connected to an appropriate portion of the main pipe, is provided on the downstream side of the cleaning required portion of the chemical liquid supply line, and a discharge passage is provided on the upstream side of the cleaning required portion. A chemical mixing apparatus, wherein a three-way switching valve is provided, and the automatic flush water valve and the three-way switching valve are also controlled by the control device.
する薬液供給ラインを接続し、該薬液供給ラインに薬液
流量計と流量調節弁を設置すると共に、前記主管の流量
と薬液供給ラインの流量との比率を制御装置に入力する
設定器を設け、薬液供給ラインの流量を該制御装置にて
所定比率の流量になるように自動的に前記流量調節弁を
調整する薬液混入装置において、 薬液供給ラインの洗浄必要箇所の下流側には前記主管の
適宜箇所と接続される洗浄水用自動弁を有する分岐流路
が設けられ、また該洗浄必要箇所の上流側には排出流路
を有する分岐点が設けられ、該分岐点の上流側流路と排
出流路には薬液用自動弁と排水用自動弁とがそれぞれ設
けられ、且つ該浄水用自動弁、薬液自動弁及び排水自動
弁も前記制御装置により制御されることを特徴とする薬
液混入装置。2. A main pipe flowmeter and a chemical liquid supply line for mixing a chemical liquid into the main pipe are connected to the main pipe, and a chemical liquid flowmeter and a flow rate adjusting valve are installed in the chemical liquid supply line, and the flow rate of the main pipe and the chemical liquid supply line. In the chemical liquid mixing device, which is provided with a setting device for inputting a ratio to the flow rate of the control device, and which automatically adjusts the flow rate control valve so that the flow rate of the chemical liquid supply line becomes a flow rate of a predetermined ratio in the control device, A branch passage having an automatic valve for washing water, which is connected to an appropriate portion of the main pipe, is provided on the downstream side of the cleaning required portion of the chemical liquid supply line, and a discharge passage is provided on the upstream side of the cleaning required portion. A branch point is provided, and a chemical liquid automatic valve and a drainage automatic valve are respectively provided in the upstream side flow path and the discharge flow path of the branch point, and the water purification automatic valve, the chemical liquid automatic valve, and the drainage automatic valve are also provided. Being controlled by the control device Chemical contamination and wherein.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7185609A JP3014299B2 (en) | 1995-07-21 | 1995-07-21 | Chemical mixing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7185609A JP3014299B2 (en) | 1995-07-21 | 1995-07-21 | Chemical mixing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0928140A true JPH0928140A (en) | 1997-02-04 |
JP3014299B2 JP3014299B2 (en) | 2000-02-28 |
Family
ID=16173804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7185609A Expired - Fee Related JP3014299B2 (en) | 1995-07-21 | 1995-07-21 | Chemical mixing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3014299B2 (en) |
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